Device fob automatically setting tbain bbakes



July 9,1929. SWEENEY 1.720.103

DEVICE FOR AUTOMATICALLY SETTING TRAIN BRAKES Filed May 1929 TW WJanwsMJweem W Gum/new).

Patented July 9, 1929. 7

UNITED STATES JAMES M. SWEENEY, OF LEWIS RUN, PENNSYLVANIA.

DEVICE FOR AUTOMATICALLY SETTING TRAIN BRAKES;

Application filed May 6, 1929. Serial No. 360,787.

This invention relates to railway rolling stock, and aims to providenovel means for automatically setting the brakes forming a part of theair brake system of railway rolling stock, so that damage to the railwayproperty caused by falling brake beams, will be eliminated.

An important object of the invention is to provide a. valve located inthe train pipe line, which valve will be automatically operated by theweight of a falling brake beam, to release the air in the train pipeline and set the brakes.

Another object of the invention is to provide a device of this characterwhich may be readily and easily installed on the trucks of railwayrolling stock, without the necessity of making extensive alterations inthe construction of the truck to apply the device.

Vith the foregoing and other objects in view which will appear as thedescription proceeds, the invention resides in the combination andarrangement of parts and in the details of construction hereinafterdescribed and claimed, it being understood that changes in the preciseembodiment of the invention herein disclosed, may be made within thescope of what is claimed, without departing from the spirit of theinvention.

Referring to the drawing:

Figure 1 is a fragmental plan view illustrating a device constructed inaccordance with the invention as installed on a truck of a car or thelike.

Figure 2 is a side elevational view thereof.

Figure 3 is a detail view of one of the pipe supporting brackets.

Referring to the drawing in detail, the reference character 5 designatesatruck bolster, which is constructed of channel bar material, the freeedges of the flanges of the channel bar material accommodating thebrackets 6. Each of these brackets includes a length of substantiallywide metal material, one end thereof being bent downwardly as at 7, tofit with an opening 9 through which the pipe 10 of the train pipe linepasses, there being provided a valve 11, fitted on the portion of thepipe 10 that extends above the laterally extended portion 8 of thebracket. The reference character 12 designates an arm that connects withthe valve, and as shown this arm extends laterally in the path of travelof the arm 13 which is carried by the brake beam, which in the presentshowing is indicated by the reference character 14.

A clamp indicated by the reference character 15 clamps the arm 13 to thebrake beam 14 with the result that as the beam 14 falls downwardly dueto a broken supporting link or chain, the weight of the brake beam willact to rotate the arm 12 operating the valve to release the air in theair pipe line, causing the brakes which are usually held in theirinactive positions by the air pressure in the pipe line, to be set,stopping the train and avoiding accident due to the broken brake beamdragging over the track.

I claim:

A pipe connected in the pipe line of the air brake system of a railwayrolling stock, brackets positioned over the truck bolster and havinglateral extensions, for supporting the pipe, a valve for controlling thepassage of air from the pipe to the atmosphere, and means for operatingthe valve to release air in the pipe when the brake beam of the rollingstock falls downwardly.

In testimony that I claim the foregoing as my own, I have hereto aflixedmy signature.

JAMES M. SWEENEY.

